A5 Quattro Coupe V6-3.2L (CALA) (2009)
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Oxygen Sensor: Service and Repair
Oxygen Sensor 2 after Catalytic Converter
Oxygen Sensor 2 after Catalytic Converter
Special tools, testers and auxiliary items required
‹› Ring spanner 7-piece set for oxygen sensor (3337)
Removing
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Pull rear engine cover off - arrows -.
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Remove coolant reservoir - arrows -.
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Disconnect electrical connector to engine coolant level warning switch (F66) on bottom of coolant reservoir and lay reservoir aside with coolant
hoses - 1 and 2 - and - 2 - attached.
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Disconnect electrical connector - 1 - for Oxygen Sensor (O2S) 2 behind Three Way Catalytic Converter (TWC) (G131).
